1. 1) Goto, M., Saito, M., Ikemoto, K., and Tsuda, Y. (1976): Proc. Japan Acad., 52, 389-392.
2. 2) Vassort, G., and Rougier, O. (1972): Pflügers Arch., 331, 191-203.
3. 3) Goto, M., and Saito, M. (1974): Proc. Internat. Union Physiol., Science, 11, p 248.
4. 4) Harris, P., and Opie, L.H. (1971): Calcium and the Heart. Academic Press, London and New York.
5. 5) Langer, G. A. (1973): Ann. Rev. Physiol., 35, 55-86.